Wireless charger



FIG. 1 is a top plan view of a wireless charger showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a left side elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a front elevation view thereof;

FIG. 6 is a perspective view thereof; and,

FIG. 7 is a perspective view with the charging cable in an extended state.

The broken lines shown in the drawings depict portions of the charger that form no part of the claimed design. 

CLAIM The ornamental design for a wireless charger, as shown and described. 